CBSE Board Practice

Class VI Class VII Class VIII Class IX Class X
CBSE Grade VII - Exponents and Powers
Question 1
1.
    • (
      7
      2
      		)
      6
      ✕
      (
      8
      (-6)
      		)
      -4
      ✕
      (
      10
      (-5)
      		)
      4
      (
      7
      (-3)
      		)
      3
      ✕
      (
      8
      (-5)
      		)
      -6
      ✕
      (
      10
      (-3)
      		)
      4
    • =
  • 7
    22
    ✕
    8
    (-6)
    ✕
    10
    (-8)
  • 7
    21
    ✕
    8
    (-6)
    ✕
    10
    (-7)
  • 7
    21
    ✕
    8
    (-5)
    ✕
    10
    (-8)
  • 7
    21
    ✕
    8
    (-6)
    ✕
    10
    (-8)
Question 2
2.
    • Find the prime factorization of
    • 1
  • -1
  • 2
  • 0
  • 1
  • 4
Question 3
3.
    • Find the exponential notation of
    • 12
      35
  • 2 2
     
    		✕
    3
    5
    		✕
    10
  • 2 2
     
    		✕
    3
    5
    		✕
    5
  • 2
    		✕
    3
    5
    		✕
    7
  • 2 2
     
    		✕
    3
    5
    		✕
    7
  • 2 3
     
    		✕
    3
    5
    		✕
    7
Question 4
4.
    • Simplify
    • (-2) -2
       
      		✕
      (-4) -2
       
      		✕
      (-4) 2
       
      (-5) -2
       
      		✕
      2 -3
       
      		✕
      3 2
       
  • 2
    		✕
    5 2
     
    3 2
     
  • 2 2
     
    		✕
    5 2
     
    3 2
     
  • 2
    		✕
    5 2
     
    3 -1
     
  • 2
    		✕
    5 2
     
    6 2
     
  • 1
    		✕
    5 2
     
    3 2
     
Question 5
5.
    •   −  
      2
      x
      (-9)
      .
        −  
      6
      x
      2
    • =
  • 12
    x
    (-7)
  • −
    8
    x
    (-7)
  • 12
    x
    (-18)
  • −
    7
    x
    12
  • −
    8
    x
    (-18)
Question 6
6.
    • Expand the following base power
    • (-4) 3
       
  • -216
  • -64
  • 16
  • 256
  • -1
Question 7
7.
Represent the given large number in scientific form
159238000000
  • 1.59238
    ✕
    10 13
     
  • 1.59238
    ✕
    10 12
     
  • 1.59238
    ✕
    10 10
     
  • 1.59238
    ✕
    10 9
     
  • 1.59238
    ✕
    10 11
     
Question 8
8.
    • 0
      0
    • =
  • -1
  • 1
  • undefined
  • ∞
  • 0
Question 9
9.
    • Find the exponential notation of
    • (
      -36
      5
      		 )
  • -1
    		✕
    2
    		✕
    3 2
     
    5
  • -1
    		✕
    2 2
     
    		✕
    3 2
     
    5
  • -1
    		✕
    2 2
     
    		✕
    3 2
     
    2
  • -1
    		✕
    2 3
     
    		✕
    3 2
     
    5
  • -1
    		✕
    2 2
     
    		✕
    3 2
     
    7
Question 10
10.
    • (
      1
      3
      p
      q
      r
      		)
    • ✕
    • (
      7
      q
      9
      r
      7
      		)
    • ✕
    • (
        −  
      7
      4
      r
      8
      		)
    • =
  • 343
    16
    q
    17
    r
    22
  • −
    49
    12
    p
    q
    10
    r
    16
  • 7
    3
    p
    q
    10
    r
    8
  • 49
    48
    r
    16
    p
    q
    9
  • −
    49
    12
    p
    q
    18
    r
    15